What are the three elements of fresh flower food? How does each element work to keep flowers
fresher longer?
What will be an ideal response?
The first main element is a carbohydrate, either sucrose or glucose; this is the “food” of fresh flower
foods. Carbohydrate is the substrate used for energy to carry on life processes such as growth and
floral opening. A snag is that these carbohydrates also help fungi and bacteria to grow. In order to
counteract that, a biocide component, the second main element, aids in keeping bacterial growth along
with fungi, yeasts, and molds from plugging-up water-conducting vessels. The third component, citric
acid, lowers water pH, which, ideally, should be 3.0-4.5, making the solution more acidic. This aids in
water flow into the stem because moisture in plant material is acidic.
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One-way solid slabs span parallel lines of support formed by _____.
a. beams or walls b. reinforcement c. columns d. footings
A subgrade is ready for finishing when the slopes have been trimmed and compacted and the _____.
a. shoulders built and cut off vertically on the road side b. proper crown has been established on each shoulder c. geotextile has been placed onto the soil surface d. bedding material has been thoroughly mixed with the soil
Free-travel can be checked at the outer end of the fork on many cars.
a. true b. false
Most ladder diagrams show coils connected in parallel.
Answer the following statement true (T) or false (F)